PULUODY PMT Portable Hydraulic Oil Particle Counter

Overview

The PULUODY PMT Portable Hydraulic Oil Particle Counter is an industrial-grade, field-deployable optical particle counter engineered for rapid, accurate, and repeatable contamination monitoring of hydraulic fluids, lubricants, and other hydrocarbon- and synthetic-based oils. It operates on the light obscuration (LO) principle—specifically the seventh-generation dual-laser narrow-beam detection architecture—ensuring high sensitivity to solid particulate contaminants across a broad dynamic size range. Unlike benchtop-only systems, the PMT integrates robust fluid handling, real-time pressure tolerance up to 50 MPa (with integrated pressure regulation), and wide-viscosity adaptability (up to 500 mm²/s online), making it suitable for both offline laboratory verification and direct in-line or on-site sampling at critical hydraulic system points—including servo-valve manifolds, reservoir breathers, and filter bypass lines. Its measurement methodology complies with internationally recognized standards including ISO 11500 (hydraulic fluid particle counting), ISO 4406 (coding of contamination levels), NAS 1638 (aerospace fluid cleanliness), and SAE AS4059D (aerospace hydraulic fluid cleanliness classification), enabling traceable, audit-ready data generation for quality control, predictive maintenance, and regulatory reporting.

Key Features

• Seventh-generation dual-laser narrow-beam optical sensor with optimized signal-to-noise ratio for reliable detection of particles from 2 µm to 100 µm (or 4–70 µm(c)), supporting both absolute and cumulative counting modes.
• 1000 programmable size channels—enabling user-defined binning (e.g., ≥4 µm(c), ≥6 µm(c), ≥14 µm(c), ≥21 µm(c), ≥25 µm(c), ≥38 µm(c), ≥50 µm(c), ≥68 µm(c)) per ISO 4406 and NAS 1638 reporting requirements.
• Integrated pressure-regulated sampling module capable of direct online operation at pressures up to 50 MPa—eliminating the need for external pressure-reduction hardware during high-pressure system diagnostics.
• Wide viscosity compatibility: supports offline analysis of low-viscosity solvents (e.g., IPA, acetone) and high-viscosity turbine oils (≤500 mm²/s online); flow rate precisely controlled between 10–60 mL/min (sampling) and 20–150 mL/min (flushing).
• Industrial-grade embedded control: color LCD touchscreen interface with intuitive navigation, local data storage of ≥20,000 test records, and USB expandability for unlimited archival—no external PC required for basic operation.
• Multi-standard compliance engine: preloaded with ISO 4406-99/87, NAS 1638, SAE AS4059D, GJB 420B, and DL/T 432; customizable threshold logic for pass/fail evaluation against internal cleanliness specifications.

Sample Compatibility & Compliance

The PMT is validated for use with mineral-, synthetic-, and bio-based hydraulic oils (e.g., HLP, HVLP, HFD-U), turbine oils (ISO VG 32–100), transformer insulating oils, gear oils, engine oils, aviation fuels (Jet A-1), water-glycol and phosphate-ester fire-resistant fluids, as well as polymer solutions and ultra-pure aqueous media. All measurements adhere to ISO 11171 (MTD calibration), ISO 4402 (ACFTD calibration), and GB/T 18854 for instrument validation. The system meets GLP and GMP-aligned operational requirements—supporting full audit trails, user access control, electronic signature readiness, and data integrity features compatible with FDA 21 CFR Part 11 implementation when paired with compliant enterprise software environments.

Software & Data Management

The PMT runs P6.4 Analysis & Testing Software (integrated firmware + optional PC desktop version), offering real-time particle histogram visualization, trend analysis, multi-sample comparison, and automated report generation in PDF/CSV formats. Data export includes raw channel counts, ISO 4406 codes, NAS class numbers, and custom cleanliness grades. Software supports configurable metadata tagging (operator ID, location, equipment tag, sampling point), time-stamped logging, and integration with LIMS via standard OPC UA or Modbus TCP protocols. Firmware updates are performed via secure USB key—ensuring long-term maintainability without vendor dependency.

Applications

• Routine condition monitoring of hydraulic systems in aerospace ground support equipment, wind turbine pitch/yaw controls, and aircraft actuation circuits.
• Pre-commissioning verification and periodic certification of oil cleanliness in power generation turbines and transformer cooling loops.
• Wear debris analysis in heavy-duty mobile hydraulics (excavators, cranes, mining shovels) and stationary industrial machinery.
• Validation of filter performance (β-ratio testing) and service life extension studies under ASTM D2276 and ISO 16889 protocols.
• Contamination control in semiconductor manufacturing tool lubrication circuits and cleanroom-compatible fluid handling systems.
• Research-grade particle stability assessment in polymer processing fluids and functional nanofluids.

FAQ

What calibration standards does the PMT support?
It supports ISO 11171 (MTD), ISO 4402 (ACFTD), and GB/T 18854 for sensor calibration and verification—traceable to NIST-certified reference materials.
Can the PMT perform real-time online monitoring without sample extraction?
Yes—it is designed for direct inline installation with integrated pressure regulation, enabling continuous or triggered sampling at system pressures up to 50 MPa.
Does the instrument meet ISO 4406 coding requirements for reporting?
Yes—automated calculation and display of ISO 4406:1999 and ISO 4406:1987 codes based on user-selected particle thresholds (e.g., ≥4 µm(c) and ≥6 µm(c)).
Is data export compatible with enterprise quality management systems?
Yes—CSV and PDF reports include full metrological metadata; optional OPC UA/Modbus TCP enables seamless LIMS and MES integration.
What is the minimum detectable particle size and associated uncertainty?
The lower detection limit is 2 µm (absolute) or 4 µm(c) per ISO 4402; typical counting accuracy is <3% CV at concentrations ≥1000 particles/mL.